Questão jurídica principal
Whether the federal court may intervene against the Zurich tax decision as unconstitutional double taxation.
Decisão extraída
No. Federal protection against double taxation applies only where two or more cantons tax the same object, creating an intercantonal conflict; this case concerns only the application of Zurich law to a taxpayer domiciled in Zurich.
Fundamentação extraída
The complaint alleged only double taxation. The court reiterated that constitutionally relevant double taxation exists only in intercantonal cases. Because the dispute concerned solely cantonal tax law within Zurich, the federal court lacked competence.